CAJ | 학술논문

推导了箱梁顶板横向温差应力的理论计算公式，得出箱梁横向自约束应力与框架约束应力沿顶板厚度分布规律及其随温差变化规律；同时提出“主动”降低温差以减小横向温差应力防止顶板开裂的思路。经实例计算表明：“主动”降低温差可显著减小箱梁顶板横向温差应力，从而有效避免顶板纵向开裂。
추도료상량정판횡향온차응력적이론계산공식，득출상량횡향자약속응력여광가약속응력연정판후도분포규률급기수온차변화규률；동시제출“주동”강저온차이감소횡향온차응력방지정판개렬적사로。경실례계산표명：“주동”강저온차가현저감소상량정판횡향온차응력，종이유효피면정판종향개렬。
The theory calculation formula of transverse temperature stress on the box girder roof was deduced, and concluded the distribution regularity of transverse self-restraint stress and framework constraint stress along the thickness of the box girder roof;and then put forward the idea by“initiatively” lowering the temperature difference to minimize transverse temperature stress and prevent the roof to crack.The example calculation shows that: the transverse temperature stress of box girder roof can be effectively reduced by decreasing the temperature difference, thus effectively avoid roof longitudinal cracks.